Required library edition:
Required library file: dhtmlxlayout.js / dhtmlxaccordion.js

attaches dhtmlxAccordion to a cell, returns an accordion object

Attaching to the layout's cell:

var dhxAcc = dhxLayout.cells("a").attachAccordion(); // returns accordion object

Attaching to the accordion's cell:

var dhxAcc2 = dhxAcc.cells(id).attachAccordion(); // returns accordion object